Broad is a surname. Notable people with the surname include:

• Alfred Scott Broad (1854–1929), South Australian artist
• Alice Broad (fl. 1661–1664), British, first female printer in York, England
• C. D. Broad (1887–1971), English philosopher known for Scientific Thought (1930)
• Chris Broad (cricketer) (born 1957), former English cricketer and match referee
• Chris Broad (filmmaker) (born 1990), British YouTuber, filmmaker and podcast host
• Eli Broad (1933–2021), American billionaire and philanthropist
• Frank Broad (1874–1956), British politician
• James Broad (disambiguation), multiple people
• Lindsey Broad, American television, stage, and film actress
• Neil Broad (born 1966), South African-born tennis player
• Nick Broad (died 2013), English nutritionist
• Pery Broad (1921–1993), Brazilian SS officer at Auschwitz concentration camp
• Shane Broad (born 1976), Australian politician and rower
• Stephen Broad (born 1980), former English footballer
• Stuart Broad (born 1986), English cricketer, son of the cricketer, Chris Broad
• Billy Idol (born 1955), real name William Albert Michael Broad
• William Broad (born 1951), The New York Times writer